Last name Petelsky (Petelsky 
, Петельский 
) , all over the world, is a very rare family name. The cognomen Petelsky is habitual in Belarus, where it is a very rare surname, Israel, and Kazakhstan. Not in comparison with a country's population, it is commonest in Russia, Belarus, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Petelsky | Argentina, Israel, United States |
| Петельский | Kazakhstan, Russia, Belarus |
Петелски, Петелский, Петелскы, and Петельський